Mike,
No No you can run your conventionals with your DCS and it is seriously cool.
If you do not want to run on the same tracks set up a dual level layout. I always recommend the Z4K Transformer with the side receiver, however the Trx option on the
DCS hand held remote, makes it possible also. Heck I can even run Lionel Conventional Tin Plate and MTH P2 Tin Plate on the same tracks if I want too, a way cool option.
No need for shelf queens with a full DCS layout.
PCRR/Dave
MTH P2 263E on the left, Conventional 259E on the right running at the same time.